166884072541 has 8 divisors (see below), whose sum is σ = 175736412000. Its totient is φ = 158038629840.

The previous prime is 166884072527. The next prime is 166884072581. The reversal of 166884072541 is 145270488661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166884072541 - 2⁷ = 166884072413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166884072581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674475 + ... + 1771336.

It is an arithmetic number, because the mean of its divisors is an integer number (21967051500).

Almost surely, 2^166884072541 is an apocalyptic number.

It is an amenable number.

166884072541 is a deficient number, since it is larger than the sum of its proper divisors (8852339459).

166884072541 is a wasteful number, since it uses less digits than its factorization.

166884072541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448379.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 166884072541 in words is "one hundred sixty-six billion, eight hundred eighty-four million, seventy-two thousand, five hundred forty-one".